CVSS: 7.5EPSS: 97%CPEs: 96EXPL: 0CVE-2019-11479 – kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service
https://notcve.org/view.php?id=CVE-2019-11479
Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363. Jonathan Looney descubrió que el tamaño máximo de segmento (MSS) por defecto del kernel de Linux está codificado a 48 bytes. • http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt http://www.openwall.com/lists/oss-security/2019/06/28/2 http://www.openwall.com/lists/oss-security/2019/07/06/3 http://www.openwall.com/lists/oss-security/2019/07/06/4 http://www.securityfocus.com/bid/108818 https://access.redhat.com/errata/RHSA-2019:1594 https://access.redhat.com/errata/RHSA-2019:1602 https://access.redhat.com/errata/RHSA-2019:1699 https://access.redhat.com/security/vulnerabili • CWE-400: Uncontrolled Resource Consumption CWE-405: Asymmetric Resource Consumption (Amplification) CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 8.6EPSS: 0%CPEs: 78EXPL: 0CVE-2018-5743 – Limiting simultaneous TCP clients was ineffective
https://notcve.org/view.php?id=CVE-2018-5743
By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. • https://kb.isc.org/docs/cve-2018-5743 https://support.f5.com/csp/article/K74009656?utm_source=f5support&%3Butm_medium=RSS https://www.synology.com/security/advisory/Synology_SA_19_20 https://access.redhat.com/security/cve/CVE-2018-5743 https://bugzilla.redhat.com/show_bug.cgi?id=1702541 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 0%CPEs: 57EXPL: 0CVE-2018-15328
https://notcve.org/view.php?id=CVE-2018-15328
On BIG-IP 14.0.x, 13.x, 12.x, and 11.x, Enterprise Manager 3.1.1, BIG-IQ 6.x, 5.x, and 4.x, and iWorkflow 2.x, the passphrases for SNMPv3 users and trap destinations that are used for authentication and privacy are not handled by the BIG-IP system Secure Vault feature; they are written in the clear to the various configuration files. En BIG-IP 14.0.x, 13.x, 12.x y 11.x, Enterprise Manager 3.1.1, BIG-IQ 6.x, 5.x y 4.x, e iWorkflow 2.x, las frases de contraseña para los usuarios SNMPv3 y destinos de captura que se emplean para la autenticación y la privacidad no son gestionados por la característica del sistema Secure Vault de BIG-IP; están escritos en claro en los diferentes archivos de configuración. • http://www.securityfocus.com/bid/106258 https://support.f5.com/csp/article/K42027747 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 70EXPL: 0CVE-2018-15321
https://notcve.org/view.php?id=CVE-2018-15321
When BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.1.0-2.3.0, or Enterprise Manager 3.1.1 is licensed for Appliance Mode, Admin and Resource administrator roles can by-pass BIG-IP Appliance Mode restrictions to overwrite critical system files. Attackers of high privilege level are able to overwrite critical system files which bypasses security controls in place to limit TMSH commands. This is possible with an administrator or resource administrator roles when granted TMSH. Resource administrator roles must have TMSH access in order to perform this attack. Cuando BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2 o 11.2.1-11.5.6; BIG-IQ Centralized Management 5.0.0-5.4.0 o 4.6.0; BIG-IQ Cloud and Orchestration 1.0.0; iWorkflow 2.1.0-2.3.0 o Enterprise Manager 3.1.1 está licenciado para el modo Appliance, los roles de administrador Admin y Resource pueden omitir las restricciones del modo Appliance de BIG-IP para sobrescribir archivos críticos del sistema. • https://support.f5.com/csp/article/K01067037 • CWE-269: Improper Privilege Management •
CVSS: 6.5EPSS: 0%CPEs: 71EXPL: 0CVE-2018-15322
https://notcve.org/view.php?id=CVE-2018-15322
On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 6.0.0-6.0.1, 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.0.1-2.3.0, or Enterprise Manager 3.1.1 a BIG-IP user granted with tmsh access may cause the BIG-IP system to experience denial-of-service (DoS) when the BIG-IP user uses the tmsh utility to run the edit cli preference command and proceeds to save the changes to another filename repeatedly. This action utilises storage space on the /var partition and when performed repeatedly causes the /var partition to be full. En BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2 o 11.2.1-11.5.6; BIG-IQ Centralized Management 6.0.0-6.0.1, 5.0.0-5.4.0 o 4.6.0; BIG-IQ Cloud and Orchestration 1.0.0; iWorkflow 2.0.1-2.3.0 o Enterprise Manager 3.1.1, un usuario BIG-IP con acceso tmsh podría provocar que el sistema BIG-IP experimente una denegación de servicio (DoS) cuando este usuario emplea la utilidad tmsh para ejecutar el comando de preferencias edit cli y guarda los cambios repetidamente en otro nombre de archivo. Esta acción emplea almacenamiento de la partición /var y, cuando se realiza repetidamente, provoca que la partición /var se llene. • https://support.f5.com/csp/article/K28003839 •